Adolph Frank (January 20, 1834 – May 30, 1916) was a German-Jew chemist, engineer, and businessman.

Adolph Frank was born in the town of Klötze (now in Altmarkkreis Salzwedel in Altmark, Saxony-Anhalt.

In 1861 and 1862, he received his doctorate in chemistry from the university in Göttingen with a work about the production of sugar.

He received this patent for having discovered a way to clean beet juice with clay soaps.

In the same year those two and a few other businessmen founded Cyanidgesellschaft mbH, which would later become Bayrischen Stickstoff-Werke AG (BStW) in Trostberg.